diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php
index 60bb144a83..24ed23a002 100644
--- a/plugins/OStatus/OStatusPlugin.php
+++ b/plugins/OStatus/OStatusPlugin.php
@@ -24,6 +24,8 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
+set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/');
+
 class FeedSubException extends Exception
 {
 }